Tire bead reenforcing element



April 1s, 1933.

TIRE BEAD REENFORCING- ELEMENT Filled Dec. 2s, 1 930 A. H. JoHNsQN 1,903,925

Pateted 18, 17933` .UNITED STATES PATENT lol-IFTCE `ALFBED H. JOHNSON, l' IICH-IGAN, ASSIGNOR TO NATIONAL-STANDARD PANY,\0F mm, IIGEIGAN, A GOBPORATION 0F MICHIGAN COI- A m Bm IYBIEIIINFRCING annua nea December as, 1930. serial no. 504,927.

This invention relates to improvements in I tire-bead 4reenforcing elements and, more especially, the tension member or members in such an element. Among the features of my invention is the provision of a reenforcing element with a tension member to which the rubber of the bead will firmly adhere.

In the construction of tire-bead reenforcing elements heretofore, it has been the pracy vention will appear more fully as I proceed with my s cication. In 'that orm of device embodying the features of my invention shown in the accompanying drawing-4 Figure 1 is a view of a reenforcing element including a single tension member of twisted wires; Fig. 2 is a view of such an element formed of four tensionmembers imbedded in a rubber tape; Fig. 3 is a view taken as indicated by the line 3--3 of Fig. 2; Fig. 4 is a view of a reenforcing-element formed of four tension members 'inclosed in a fabric sheath; Fig. 5 is a view taken as indicated by the line 5-5 of Fig. 4; 'and Fig. 6 is a view similar to Fig. 1 showing a tension member formed of braided wires.

As shown in the drawin' the principal characteristic of my invention is the` provision of av tension member comprising a stranded wire, or a plurality of 'wires twisted or braided together. Such a tension member is shown in Fig. 1 as including two wires 10, lOtwisted together to form a single tension member. In its broadest aspects, my invention contemplates the use of such a tension element in a tire bead. When this tension member is imbedded in thetire bead, the

. in whichA they are imbe tion may be formed by the usual extrusionl rubber `thereof will, adhere rmly to the twisted wire. In using Aa tension memberas shown in Fig. 1, one or more turns or convoiutions of the same may Abe used in the tire bead or, if desired, an annulus may first be formed, including as many turns as desired and then the completed annulus imbedded in the tire bead during the manufacture thereof.

Where more than one tension member .is desired in the reenforcing element, a plurality of the same maybe lmbedded in a rubber ta e 11, as shown inFi s. 2 and 3. As

four tension members, as shown exsA here s own, in Fig. 1, are employed and the same are held in parallel relationship b the rubber tapey 11 dded. This construcmachine, or anyother suitable device. The rubber 11 of the tape will adhere firmly to the tension members, such adhesion being increased by the twisted formation. The comf pleted tape or reenforcing element is imbedded in the tire bead in the usual manner;

In the form shown in Figs.- 4 and 5, four tension members are held together by a fabric sheath 12 Wrapped about the same, as shown. This sheath 12 serves to holdvthe tension members in arallel relationship, and the same is 'prefera ly made of fabric im pregnated with rubber. When the completed reenforcing element is imbedded in a tire bead, the rubber of the bead will adhere to the sheath 12 and more or less may be forced through the same.l In any event, the sheath 12 will be forced in, around and between the twisted wires to cause a firm lodgment of the .wires and the completed element in the tireV bead.

Fi 6V isl a -view showing a single tension mem er formed of three vWires braided t0.- gether. The member here shown resembles A the tension member shown in Fig. 1, except.

that the wires are braided instead of twisted. It is to'be understood that the tension member shown in Fig. 6 is adapted to the sameVVV Y uses as the one shown in Fig. 1. Also, where member, as shown in Fig. 1, as a reenforcing used in the same wa as disclosed in Figs. 2i, 3, 4 and 5, and suite ly imbedded, covered .or encased, as' described m connection with such 5 'le I have shown and described certain embodiments of my invention, it is to be understood that it is capable of many modifica.- tions. Changes, therefore, in. the construction and arrangement may be made without i0 departing from the spirit and scope of the invention es disclosed in the appended claims, in which it is my intention to claim all novelty inherent in my invention es broadly es permissible, in View ost the prior le art.

What I rege-.rd es new, and desire to secure by Mtters Patent, is:

1. A tire heed reenforcing element includ-a ing a plurality of seperate parallel tension 20 members each composed of a plnralit of wires twisted tightly together throng out their len h, said members being Wholly disconnecte by cross wires and nnbedded in a substance to which rubber will adhere, said 25 substance serving to hold said members in parallel spaced relationship.`

2. A tire bead reenforcmg element comprising a closely spaced grou 'of parallel tension members each composed of a plurala0 ity of wires twisted together throughout their length, said members being imbedded in a/substence to which rubber will adhere and therewith constituting a flat tape structure. 85 In witness whereof I have hereunto set my hand this 20th da of December, 1930.

FRED H. J OHNSON, 

